OpenAI's Craiyon (formerly DALL-E mini) and Google's Imagen AIs have unleashed waves of wonderfully weird procedurally generated art synthesized from human and computer imaginations 

On Tuesday, Meta announced that it, too, had developed an AI image generation engine to facilitate the creation of high digital art and immersive worlds in the Metaverse. 

The phrase "there's a horse in the hospital" requires a lot of work from a generation AI in order to generate an appropriate image.  

The phrase is fed into a transformer model, a neural network that analyses the sentence word-by-word and builds a contextual understanding of the relationships between the words. 

An ensemble of GANs will be used by the AI to create a new image once it has a general idea of what the user is describing (generative adversarial networks). 

Each AI has its own unique method of production. 

Today's state-of-the-art AIs can create photorealistic images of pretty much any nonsense you feed them, all thanks to efforts to train ML models on ever-expanding, high-definition image sets with well-curated text descriptions. 

According to a June Keyword blog, one example is Google's Imagen, which employs a Diffusion model "which learns to convert a pattern of random dots to images."